Modifying content for feed selection

So, we know what criteria we have for our feeds, but how will Drupal know which content meets that criteria? Let's discuss two possible methods.

Pick-me flags

A pick-me flag is a content field that's purpose is to highlight the fact that the content applies to something specific, and so is the flag for selecting it. It is represented by a Boolean field, which contains True (-1) or False (0), so that you can think of it as either on or off. It is typically represented by a checkbox. 

So, for our use, we could add a field called Pets to our article content type, and check the box when creating an article if the article touches on pets, and the same with a Travel checkbox for travel content.

This makes sense, and is an easy way to determine what content to select, but there is one kink in that plan. Every time a new criterion arises, it would mean adding yet another field to the content type. Things could get messy quickly.

 

A pick-me flag works best for a standalone...